You’ll be surprised! There is a “live” rock?

The Pyura chilensis is a marine organism that looks like…
with stone and lives on the rocky coasts of Chile and Peru. A key feature is that it does not move in the water, but remains stationary in one spot, which creates the impression that it is a rock. Despite the stillness, however, fed normally from the water it absorbs in the body, taking from this all of the microorganisms.
As for the playback? As it can be moved in search of a mate, this means that it is hermaphroditic organism that has male and female genetic glands, creating offspring for himself, which cling to the rocks and continue their lives. The locals consume them “rocks” raw or laundry both of which are quite tasty and nutritious food.